Upholstered box-spring structure



1 1,628 977 May 1927' E. H. HEBENSTREIT UPHOLSTERED BOX SPRING STRUCTURE Filed Dec. 11, 1925 Fiji f I N VEN TOR.

r By C M gy fl'n/w ATTORNEYS Patented ma 17, 1927.

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My invention relates'tc improvements in.

upholstered box spring structures, with particular reference to that class of structures known as chair bottoms, although applicable to any furniture where similar condi--- tions exist. 7 I

In chairs and other articles of furniture having box springs it has heretofore been the custom to cover-the. springs by. a flexible covering-of suitable fabricsuch as denim, the mar ins of: which are secured to the inn'er sur aces of the box wall b outer covering of suitable in mic such an velour is then applied to the outer surfaces of the hon and folded over the upper margins and secured to the denim covering at points spaced inwardly from the associated wall of the box at a sufilcient distance so that the denim covering will he whollyconcealed by the chair cushion when in place and the metins oi the denim covering wholly concea ed whether the cushion in in placeor not. 'lhis practice has been followed regardless of the extent or the amount of upholstery filling be 'interposed between the outer covering and the box. Such an upholstery filling is usually applied along the upper margins of the x walls.

The practice of thus connecting the outer covering with the inner or denim covering as above described, results in subjecting the outer covering to considerable strain when the springs are compressed, therein 'stmtch' ing it, sometimes tea-ring it and iii any event causing it to -wrinkle and become dilapidated in nppearan'ce. If the central springs become relatively weak, the strains upon the -.outer covering are increased and heroine ver destructive of the fabric.

hc objects of this invention are to pro: vide meuusfor relieving the outer covering from excessive strain, for allowing the springsto be indeimndently comprczeed and yielding to provide an imepcudently yielding support for the iuturned portions of the outer coreriug and also to provide means for separately connecting tic inner and outer coverings with the box walls.

A further object of this invention is to provide an upholstered outer WH-Cl for a box sprin structure with an independently Frame for sustaining its' marginul portions, and to provide said lr'uziezat the corners with obliquely extending stays connecting it with the corner portions of the box at or near the ends. ofitfi-iiont martacke. An

gin. The rear portion of said frame being' preferably in hinged connection with the rear wall of the box.

A tuntlier object of this invention is to provide means for supporting the outer covering of a chair bottom along its upper margin at substantial distances within the' s ace enclosed by the box walls and in such a nianncr as to be relatively unyielding with reference to the springs and relatively yielding with reference to the box walls.

In the drawings: 3

Figure 1 is an isometric view of an uphotetered chair having a chair bottom em. bodying my invention.

Figure 2 is a fragmentary sectional view drawn on lineQ- Z of Figure l;

Figure 3 is a plan view with-thecushion removed and showing the freineiincmbers for the hack and arms in horizontal section. Figure 4 is a. similar view with a portionof the outer covering removed. 1 Like parts Ere identified by the same refercnce. characters throughout the several views. 4

The chair bottom comprises a box like.

structure formed of walls 10 (preferably of wood) and having a. bottom 11 Whichordinarily formed of canvas. A set otheli;

cally coiled springs 12 cqntaineduvithin the l)0l\ likeslrnc-ture will'ordinarily be encased in a canvas envelo )e 13. A covering i l: of

suitable fabric sum as denim extends over lhc spring, preferably with an interposed parking 15 of wool, cotton or hair, and the margins of this denim covering are upturned and tacked to the upper marginal portions of the wall 10 as show-n at 16. The .corcfing 14. is, for convenience in description, designated as the inner covering.

Above this covering and inwardly SPllCGd from the side and front walls of the box is a yielding frame- 18, preferably composed of resilient wire (steel wire) huvin its ends in hinged connection with the hue wall of. the box as indicated at 19. The hinges-are formed by bending the-ends of the wire inwardly or outwardly and securing, them to the back wall of. the box by suitable cli s of fabric or metal. The: front corners of t 1e frame 13 are counocted to the front. corner portions of the box by flexible stays 20 of any suitable material, preferably by twisted wire cables. Y

The outer covering 1:2 is composed of any suitable fabric such as velour. it it secured 'to the web 24, whereupon the web is tacked to the box at 25 and the covering then folded about the wire strands of the frame 18 and extended over the margins of the box. A suitable filling 27 is inserted over said margins and in the space between the web portions 23 and 24 and the inturned portions of the covering 22. Said coverin is then folded downwardly along the wal ,ol"

the box and cemented or otherwise secured thereto. It will, of course be understood that the covering will be gored at the corners to prevent buckline or wrinkling.

With the above desciubed construction it is obvious that the inwardly folded portion 29 of the covering 22 will cover the marginal portions of theinn'ei' covering 14 and wholly conceal the same. The. location or .dimensions of the frame 18 will determine (he distance to which this portion 29 will extend inwardly from the associated walls of the box and the cushion 30 will completely conceal the central portion of the covering 14. When weight is applied to the cushion, the covering 14 and the springs will yield independently of the frame 18. The latter will yield to a less extent, being supported at its four corners. The stages 20, which connect the two front corners with the box walls, allow a limited yielding movement of this frame and the frame itself being flexible, it will'movedownwardly to a sulli'cicntextent to allow the load to be applied to thesp'rings adjacent to the box walls although to a less extent than has been the case in the box spring structures heretofore made. Therefore, the load upon the springs will be relieved, but'the' portion of the load which is applied to the springs will be concentrated in the central area. The central springs are ordinarily longer than tlie side spriiigslwhereby thecentral area. is normally centrally arched. The concentrated load will be no greater than that heretofore applied -to the central portions of box spring structures and in fact it will ordinarily-be somewhat less although relativelygreater in proportion to the load carried by the springs at the sides and front. Owing to'the fact that the frame 18 is hinged at the rear and supported by stays at the front, itis permitted to swing downwardly at the front and thereby avoid any tendency to provide a rigid line of support ea er? along the front which might "otherwise cause discomfort.

I claim:

1. A box spring with a frame structure having rigid side walls and having an outer cover provided with upper marginal portions inwardly extended over the upper edges of said side walls, and a yielding support for said marginal portions of the cover located at a substantial distance inwardly from the upper margin of said rigid side walls, said support having connections with the box walls adapted to permit relatively yielding movement with reference thereto, said support being relatively unyielding with reference to the springs.

A box spring structure comprising the combination with rigid box walls and enclosed springs, of a frame having its'rear corners in hinged connection with the rear wall of the box and its front corners spaced inwardly from the side walls and front wall of the box adjacent to the level of their upper margins and flexibly connected therewith, an outer covering for the box walls extending inwardly over their upper margins and secured to the side and front por tions of said frame, said frame being adapted to support the inwardly extending portions of the covering yieldingly with reference to the box walls but relatively unyieldingly with reference to the springs.

3. An upholstered box spring structure comprising the combination with substantially rigid upwardly extending box walls, springs enclosed thereby and provided with :i flexible covering marginally secured to the box walls adjacent to the normal plane springs contained therein, and inflexible spring, covering mar inally connected with the box walls, of a flame normally loosely supported upon said covering and hingedly connected with the rear box wall, and an outer covering for the box walls, inturned over the. upper margins thereof at the sides and front and engaged with said frame, the marginal portions of'said covering being extendedzibout said frame members and flexi y connected with the upper-portions of th adjacent box walls. 7

5. An upholstered box spring structure comprising the combination with box walls, springs contained therein andv a flexible spring covering marginally connected with the box walls, of a, .frame normally loosely supported upon said covering and hingedly connected with the rear box wall, and-an outer covering for the box walls, inturned over to upper margins thereof at the sides and front and engaged with said frame, the marginal portions of said covering bein extended about said frame members and iexibly connected with the upper portionsoi the adjacent box walls and the corners of said frame being also connected by yielding stays with the corner portions of the box walls near their upper-nmrgins.

3. An upholstered" box spring structure comprising the"oombiuation with box walls, springs contained therein, and a. flexible spring covering marginally connected with the box walls, of a frame l'lOlfllfljlllYTlOOSClY supported upon said covering and hingedly connected with the rear box well, and an outer covering-for the box walls. inturned over the upper margins thereof at the sides and front and engaged with said'frame, the marginal portions of said covering being, ext-ended about said frame member: and ficxibly connectoel with the upper iortions of the udju-' cent boa: walls, and a filling of yielding muterial between the upper margins of the box walls and the associated portions of the outer covering.

T. An upholstered box spring structure comprising the combination with box walls, springs contained therein, and a flexible spring covering mar inally connected with the box walls, of a rauie normally loose! supported upon said covering and hingedly connected with the rear box wall, and an outer covering for the box walls, inturned over the upper margins thereof at the sides and front and engaged with said friu'ne, the marginal nations of said covering bein extended about said frame members andi lexibly conncctcd with the upperoortions of the adjacent box walls, and a filling of yieldin material between the uiper margins of file box walls and the. associated portions of the outer flexibly yieldingfranie.

box spring structure,

covering -and between said box walls and 8. An upholstered comprising the combination with box walls, contained springs and a flexible spring covering, of an outer covering for the box walls having its upper margin extended inwardly also flexibly connected with the adjacent boz walls.

9. An upholstered box spring structure, comprising the combination with box walls, contained springs and a flexible spring covering, of an outer covering for the box walls having its upper margin extended inwardly over the interior ortion of the box along the sides and front hereof, and a yielding flex ible framesecured to said inturuod margins at a suliicient distance from the upper margins of'the box walls to allow an independent. 7

swm i-ug movement of the frame and marginul porl ions of the outer covering above the spring supported portions of the first menu tioned covering. the inturnod marginal i.- tions of the outer coverin beingulso eitibl v connected with the adjacent-box walls and said yielding frame having auxiliarytlcxible. connections between it and said he walls. o

10. An upholstered box spring structure,

Eli

comprising the combination with box walls,

contained springs and a flexible spring coveriug,'of an outer covering for the box walls having its upper margin extended inwardly over the interior portion of the box along the sides and front thereof, and a yielding time iblc frame secured to said inturned nun-gins at a sufiiuient distance from the upper margins of thehox walls to allow-an independent swinging movemcntof the frame and'lnarginul portions of the outer covering above the spring supported portions of the first mentioned covering, the inturnc'd marginal portions of the outer cove-ring being'also flexibly connected with the adjacent box walls and said yielding frame having auxiliary flexible conncctious between it and said box walls comprising obliquely extending corner stays.

EMI L H. HEBENSTREITJ 

